Google adsense has stopped being relevant a long time ago... Specially for technical subjects, since most tech people just blog these ads anyway.
Moreover, to be successful with Google adwords, one needs to have a lot of money to tweak the campaigns. The system created by Google is so complicated, that only spammers and big corporations have enough money to win the game.
Or, if the option is there, make a killer product and attach a good affiliate program to it. I've long been amazed Pragmatic doesn't have one. I have the perfect audiences for much of their stuff but there's not much motivation to rave about it and, even when I do, I might as well link to Amazon (meaning they make less money).
I linked up Trevor's book in JavaScript Weekl recently simply because it was such a big deal but I couldn't make a bean from it (not always the point, but if I have two choices..)
Moreover, to be successful with Google adwords, one needs to have a lot of money to tweak the campaigns. The system created by Google is so complicated, that only spammers and big corporations have enough money to win the game.